This thread might help you http://forums.adobe.com/message/5539050#5539050
It explains how to had row using show/hide logic. You can do the something similar with pages.
Here is the a test form showing/hiding rows depening on the number selected in a dropdown :
By the way you need to have a paid account to use show/hide logic and this is only supported for online forms (not PDF forms)
I guess your case is a little different than the example mentioned in the thread above since you want see see multi pages.
Assuming that you have a paid account.
Assuming that you are generating online forms (no PDF form)
You will need to use skip logic on the pages.
1) add a dropdown with the possible number of extra pages (include 0)
2) add a page break element and create your 'repeating' page
3) copy and paste the page break and the 'repeating' page content as many time as the max value in your dropdown
Then you have 2 options.
option 1 ) add skip logic ONLY to the first page break only. This option has the disadvantage of filling up the response table kind of backwards a little. Since you only show page 5 if they select 1 and page 4 and 5 if they select 2...
option 2 ) probably preferable, add skip logic to each page break. Each page goes directly to its next page unless the dropdown value is the same as the page you are with. In which case the next button should be changed to a submit form. So each page would have something similar to what's below in the image
Hope this helps... here is working example using the option (2) https://adobeformscentral.com/?f=dCixP9gCn9BlK72%2AKla92w
Absolutly perfect response. thank you Genevieve.
As it happens I dont care about the order of the data so I was able to take advantage of Option 1.
One quick question for you in case anyone else following this path later on. Is it true that any logic elements you may have in your repeating page will not survive the copy and paste and that it is nessecary to redo any inpage logic ? It was nessecary for me (and trivial to do), i am just wondering if there's a way around that.
Many thanks Genevieve.
I lied , one more quick question.
If i did want to do this as a PDF, will LifeCycle permit that ? Is there another product or service ?
I am trying to make sure I can capture data from the field where data connections may be unavailable or drop.
Sorry for the late response.
Looks like the copy and paste doesn't carry the page skip logic or show/hide logic... You can however select multiple elements and set the same show/hide logic all at once (not true for page skip logic).
There are a lot you can do with LiveCycle (including something similar to skip logic or show/hide logic) but it is more complicated to use than FormsCentral. I would suggest you ask your questions to the LiveCycle forum : http://forums.adobe.com/community/livecycle/livecycle_modules_and_development_tools/forms_ es